Roll-holding camera.



PATENTED JAN. l?, 1905.

L. T. HAHN.

ROLL HOLDING CAMERA.

APPLICATION FILED MAY '7, 1904.

@Shu Q n W/TNESSES movable ground-glass plate e.

Patented January 17, 1905.

PATENT OFFICE.

PAUL T. HAHN, OF VOODCLIFF, NEV JERSEY.

ROLL-HOLDING CAMERA.

SPECIFICATION forming part of Letters Patent No. 780,284., dated January17, 1905.

Application tiled May 7, 1904. Serial No. 206,829.

l/'o @ZZ whom, t may concern:

Be it known that I, PAUL T. HAHN, a citizen of the United States,residing at VVoodclitt, in the county of Bergen. and State of NewJersey, have invented certain new and useful Improvements inRoll-Holding Cameras, of which the following is a speciiication, such aswill enable those skilled in the art to which it appertains to make anduse the same.

This invention relates to photographic apparatus of what is known as thehlm-camera type; and the object thereof is to provide improved means forfinding the image in apparatus of this class; and with this and otherobjects in view the invention consists in a camera and iilm-stripconstructed as hereinafter described and claimed.

The invention is fully disclosed in the following specilication, ofwhich the accompanying drawings form a part, in which the separate partsof my improvement are designated by suitable reference characters ineach of the views, and in which- Figure l is a side view of a film-stripmade according to my invention; Fig. 2, a sectional view of my improvedcamera, showing' the hlm-strip in position, said section being taken onthe line 2 2 of Fig. 3; Fig. 3, a side view of the camera, and Fig. tasection on the line l 4 of Fig. 2.

In the practice of my invention I provide a camera c of a form usuallyemployed, and this camera is provided at one end with a lensholder b andat the opposite end with a hood c, which is hinged at the top of thebody of the camera, as shown at c2, said hood comprising side portionsc'F5 and an end portion c". The end of the camera opposite thelens-holder is open save for the hood c, and when said hood is in theposition shown in full lines in Fig. 3 said end of the camera is closed,and when said hood is in the position shown in dotted lines in Fig. 3said end of the camera is open. Within the body of the camera is theusual dark chamber d, formed by side walls cl2 in the usual manner, andthe larger end of the dark chamber Z is closed by a re- At the oppositesides of the dark chamber Z and at the smaller end thereof, or at theend with which the lens-holder I) is connected, is placed two spoolsfand f2, and each of these spools is provided with a key f3, by which itmay be turned. At the larger end of the dark chamber l and at both sidesthereof are placed two small rollers g, and wound on the spool f in theusual manner is a film-strip L, which is provided at regular intervalswith openings if, between which are Hlm-sections 7e3. The film-strip /tis provided at one end with a blank /L'l and at the opposite end with ablank and in practice the end is connected with the spool f, and said[ihn-strip is wound on said spool in the usual manner. The end /1/5 isthen passed around the larger end of the dark chamber fl and between therollers r/ and g2 at each side thereof, after which said end of thestripis then connected with the spool f2.

It will be observed that each of the lilmsections h3 isv numbered at theupper righthand corner thereof, beginning with the end if of the stripL, and each of the openings /Xl in said strip is marked at the upperright-hand corner by the character 0, while the beginning' of the blankend portion or the end of the strip adjacent thereto is marked by thecharacter e. In one side of the camera and adjacent to the larger end ofthe dark chamber d and adjacent to the ground glass e is an opening' c',which also extends through the adjacent side o: of the hood c, and thisopening is closed by a ruby glass 2, which is secured in the side of thecamera.

The operation is as follows: After the strip /t has been properly placedin position, as shown in Fig. 2 and as hereinbefore described, the spoolf2 is turned so as to bring' the lilm, strip into such position that thecharacter o at the upper right-hand corner of the lirst opening if insaid strip can be seen through the opening c' in the side of the camera,and in this position of said strip the first opening l/ thereof will beat the larger end of the dark chamber (Z. In order to find the image ofthe object a picture of which is desired, the hood c is raised, as shownin dotted lines in Fig. 3, and the operator looking through the open endof the camera will see the image of the object on the ground glass e ifthe camera be properly held, and the camera may be adjust- IOO ed so asto properly locate said image on said :ground g'lass. rIhe hood c isthen closed and the spool f2 is turned so as to bring' the firsthlm-section of the strip /t over the larger end of the dark chamber CZ,which position of said strip is indicated by the number of saidfilm-section appearing through the opening The shutter, which is notshown, is then operated in the usual manner, and the picture or imag'eis taken on said first film-section /z/i. It will be understood thatthis operation may be repeated until the entire film-strip is exhausted,after which the film-sections if may be developed in the usual manner.

The shutter and shutter-operating devices are not shown, for the reasonthat they form no part of this invention; but it will be understood thatthe usual devices of this class are employed. The filmstrip shown inFig. 1 is not claimed in this case, but is made the subject of aseparate application tiled by me on the 7th day of July, 1904, SerialNo. 215.573.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is*

1. In an apparatus of the class described, a camera provided with theusual dark chamber at the smaller end of which is'the lens-holder, thelarger end of said dark chamber being' provided with a ground-glassplate, the end of the camera at the larger end of the dark chamberbeing' also provided with a hing'ed hood, and said camera being' alsoprovided adjacent to said end and in one side thereof with an openingclosed by colored glass, the end of the camera at the smaller end of thedark chamber being provided at each side of said dark chamber with twospools and a film-strip adapted to be wound on one of said spools andpassed around the larger end of the darli chamber and connected with theother spool, the said darli chamber being also provided at the largerend thereof and at the opposite sides thereof with two rollers betweenwhich the film-strip is passed, substantially as shown and described.

2. In an apparatus of the class described, a camera provided with theusual dark chamber at the smaller end of which is the lens-holder, thelarger end of said dark chamber being' provided with a ground-glassplate, the end of the camera at the larger end of the dark chamber beingalso provided with a hinged hood, and said camera being also providedadjacent to said end and in one side thereof with an opening closed bycolored glass, the end of the camera at the smaller end of the darkchamber being' provided at each side of said dark chamber with twospools and a film-strip adapted to be wound on one of said spools andpassed around the larger end of the dark chamber and connected with theother spool, the said dark chamber being also provided at the larger endthereof and at the opposite sides thereof with two rollers between whichthe film-strip is passed, and said ground-glass panel at the larger endof the dark chamber being removable, substantially as shown anddescribed.

3. A camera provided with the usual dark chamber at the smaller end ofwhich is alensholder the larger end of the dark chamber being closed bya g'round-glass plate, and said larger end of the dark chamber being'provided atits opposite sides with two rollers, the end of the cameraadjacent to the larger end of the dark chamber being' provided with ahinged hood, and one side thereof with an opening' closed by a coloredpanel, and spools placed at the opposite sides of the smaller end of thedark chamber, substantially as shown and described.

4. In an apparatus of the class described, a camera including' the usualdark chamber at the smaller end of which is a lens-holder, the largerend of said dark chamber being provided with aground-glass plate, theend of the camera at the larger end of the dark chamber being' alsoprovided with a hinged hood, and at the opposite sides of the darkchamber with rollers, and said camera being also provided at theopposite sides of the smaller end of the dark chamber with spools,substantially as shown and described.

5. In an apparatus of the class described a camera provided with theusual dark chamber at the smaller end of which is the lens-holder, thelarger end of said dark chamber being provided with a ground-glass plateand at the opposite sides thereof with rollers, the end of the camera atthe larger end of the dark IOO chamber being also provided with a hingedhood, and adjacent to said end and in one side thereof with an openingclosed by a colored glass, and the end of the camera at the smaller endof the dark chamber being' provided at each side of said dark chamberwith a spool, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of the subscribing witnesses, this 6th day of Hay,1904.

PAUL T. HAI-IN. INitnesses:

F. A. STEWART, C. E. MULREANY.

IIO

